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<div class="title">arm_svm_example_f32.c</div>  </div>
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<div class="contents">
<div class="fragment"><div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Copyright (C) 2019-2020 ARM Limited. All rights reserved.</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* $Date:         09. December 2019</span></div>
<div class="line"><span class="comment">* $Revision:     V1.0.0</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* Project:       CMSIS DSP Library</span></div>
<div class="line"><span class="comment">* Title:         arm_svm_example_f32.c</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* Description:   Example code demonstrating how to use SVM functions.</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* Target Processor: Cortex-M/Cortex-A</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><span class="comment">* modification, are permitted provided that the following conditions</span></div>
<div class="line"><span class="comment">* are met:</span></div>
<div class="line"><span class="comment">*   - Redistributions of source code must retain the above copyright</span></div>
<div class="line"><span class="comment">*     notice, this list of conditions and the following disclaimer.</span></div>
<div class="line"><span class="comment">*   - Redistributions in binary form must reproduce the above copyright</span></div>
<div class="line"><span class="comment">*     notice, this list of conditions and the following disclaimer in</span></div>
<div class="line"><span class="comment">*     the documentation and/or other materials provided with the</span></div>
<div class="line"><span class="comment">*     distribution.</span></div>
<div class="line"><span class="comment">*   - Neither the name of ARM LIMITED nor the names of its contributors</span></div>
<div class="line"><span class="comment">*     may be used to endorse or promote products derived from this</span></div>
<div class="line"><span class="comment">*     software without specific prior written permission.</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span></div>
<div class="line"><span class="comment">* &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span></div>
<div class="line"><span class="comment">* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS</span></div>
<div class="line"><span class="comment">* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE</span></div>
<div class="line"><span class="comment">* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,</span></div>
<div class="line"><span class="comment">* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,</span></div>
<div class="line"><span class="comment">* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;</span></div>
<div class="line"><span class="comment">* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER</span></div>
<div class="line"><span class="comment">* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT</span></div>
<div class="line"><span class="comment">* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN</span></div>
<div class="line"><span class="comment">* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE</span></div>
<div class="line"><span class="comment">* POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><span class="comment">* -------------------------------------------------------------------- */</span></div>
<div class="line"></div>
<div class="line"><span class="preprocessor">#include &lt;math.h&gt;</span></div>
<div class="line"><span class="preprocessor">#include &lt;stdio.h&gt;</span></div>
<div class="line"><span class="preprocessor">#include &quot;<a class="code" href="arm__math_8h.html">arm_math.h</a>&quot;</span></div>
<div class="line"></div>
<div class="line"><span class="comment">/* </span></div>
<div class="line"><span class="comment">  The polynomial SVM instance containing all parameters.</span></div>
<div class="line"><span class="comment">  Those parameters can be generated with the python library scikit-learn.</span></div>
<div class="line"><span class="comment"> */</span></div>
<div class="line"><a name="_a0"></a><a class="code" href="structarm__svm__polynomial__instance__f32.html">arm_svm_polynomial_instance_f32</a> <a name="a1"></a><a class="code" href="arm__svm__example__f32_8c.html#a1510c63c4febec3a2a58a2397e2b738d">params</a>;</div>
<div class="line"></div>
<div class="line"><span class="comment">/*</span></div>
<div class="line"><span class="comment">  Parameters generated by a training of the SVM classifier</span></div>
<div class="line"><span class="comment">  using scikit-learn and some random input data.</span></div>
<div class="line"><span class="comment"> */</span></div>
<div class="line"><span class="preprocessor">#define NB_SUPPORT_VECTORS 11</span></div>
<div class="line"><span class="preprocessor"></span></div>
<div class="line"><span class="comment">/*</span></div>
<div class="line"><span class="comment">  Dimension of the vector space. A vector is your feature.</span></div>
<div class="line"><span class="comment">  It could, for instance, be the pixels of a picture or the FFT of a signal.</span></div>
<div class="line"><span class="comment"> */</span></div>
<div class="line"><span class="preprocessor">#define VECTOR_DIMENSION 2</span></div>
<div class="line"><span class="preprocessor"></span></div>
<div class="line"><span class="keyword">const</span> <a class="code" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> <a name="a2"></a><a class="code" href="arm__svm__example__f32_8c.html#a6bee216b9b7e7b8d18687cd692e26a8a">dualCoefficients</a>[<a name="a3"></a><a class="code" href="arm__svm__example__f32_8c.html#a991d9a139527d1a747541de078ca21c7">NB_SUPPORT_VECTORS</a>]={-0.01628988f, -0.0971605f,</div>
<div class="line">  -0.02707579f,  0.0249406f,   0.00223095f,  0.04117345f,</div>
<div class="line">  0.0262687f,   0.00800358f,  0.00581823f,  0.02346904f,  0.00862162f}; <span class="comment">/* Dual coefficients */</span></div>
<div class="line"></div>
<div class="line"><span class="keyword">const</span> <a class="code" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> <a name="a4"></a><a class="code" href="arm__svm__example__f32_8c.html#ac636d66272348052cde1083e5a0c3c60">supportVectors</a>[<a class="code" href="arm__svm__example__f32_8c.html#a991d9a139527d1a747541de078ca21c7">NB_SUPPORT_VECTORS</a>*<a name="a5"></a><a class="code" href="arm__svm__example__f32_8c.html#a98d2e2076140b796ee1cb5f3e77248a7">VECTOR_DIMENSION</a>]={ 1.2510991f,   0.47782799f,</div>
<div class="line"> -0.32711859f, -1.49880648f, -0.08905047f,  1.31907242f,</div>
<div class="line">  1.14059333f,  2.63443767f, -2.62561524f,  1.02120701f,</div>
<div class="line"> -1.2361353f,  -2.53145187f,</div>
<div class="line">  2.28308122f, -1.58185875f,  2.73955981f,  0.35759327f,</div>
<div class="line">  0.56662986f,  2.79702016f,</div>
<div class="line"> -2.51380816f,  1.29295364f, -0.56658669f, -2.81944734f}; <span class="comment">/* Support vectors */</span></div>
<div class="line"></div>
<div class="line"><span class="comment">/*</span></div>
<div class="line"><span class="comment">  Class A is identified with value 0.</span></div>
<div class="line"><span class="comment">  Class B is identified with value 1.</span></div>
<div class="line"><span class="comment">  </span></div>
<div class="line"><span class="comment">  This array is used by the SVM functions to do a conversion and ease the comparison</span></div>
<div class="line"><span class="comment">  with the Python code where different values could be used.</span></div>
<div class="line"><span class="comment"> */</span></div>
<div class="line"><span class="keyword">const</span> int32_t   <a name="a6"></a><a class="code" href="arm__svm__example__f32_8c.html#ae76f66a144055c576e6895e411417b63">classes</a>[2]={0,1};</div>
<div class="line"></div>
<div class="line"></div>
<div class="line">int32_t <a name="a7"></a><a class="code" href="arm__svm__example__f32_8c.html#a52d2cba30e6946c95578be946ac12a65">main</a>(<span class="keywordtype">void</span>)</div>
<div class="line">{</div>
<div class="line">  <span class="comment">/* Array of input data */</span></div>
<div class="line">  <a class="code" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> in[<a class="code" href="arm__svm__example__f32_8c.html#a98d2e2076140b796ee1cb5f3e77248a7">VECTOR_DIMENSION</a>];</div>
<div class="line"></div>
<div class="line">  <span class="comment">/* Result of the classifier */</span></div>
<div class="line">  int32_t result;</div>
<div class="line">  </div>
<div class="line"></div>
<div class="line">  <span class="comment">/*</span></div>
<div class="line"><span class="comment">    Initialization of the SVM instance parameters.</span></div>
<div class="line"><span class="comment">    Additional parameters (intercept, degree, coef0 and gamma) are also coming from Python.</span></div>
<div class="line"><span class="comment">   */</span></div>
<div class="line">  <a name="a8"></a><a class="code" href="group__polysvm.html#gad004464aae8fdecfc985a02a0de6b0af">arm_svm_polynomial_init_f32</a>(&amp;params,</div>
<div class="line">    <a class="code" href="arm__svm__example__f32_8c.html#a991d9a139527d1a747541de078ca21c7">NB_SUPPORT_VECTORS</a>,</div>
<div class="line">    <a class="code" href="arm__svm__example__f32_8c.html#a98d2e2076140b796ee1cb5f3e77248a7">VECTOR_DIMENSION</a>,</div>
<div class="line">    -1.661719f,        <span class="comment">/* Intercept */</span></div>
<div class="line">    <a class="code" href="arm__svm__example__f32_8c.html#a6bee216b9b7e7b8d18687cd692e26a8a">dualCoefficients</a>,</div>
<div class="line">    <a class="code" href="arm__svm__example__f32_8c.html#ac636d66272348052cde1083e5a0c3c60">supportVectors</a>,</div>
<div class="line">    <a class="code" href="arm__svm__example__f32_8c.html#ae76f66a144055c576e6895e411417b63">classes</a>,</div>
<div class="line">    3,                 <span class="comment">/* degree */</span></div>
<div class="line">    1.100000f,         <span class="comment">/* Coef0 */</span></div>
<div class="line">    0.500000f          <span class="comment">/* Gamma */</span></div>
<div class="line">  );</div>
<div class="line"></div>
<div class="line"></div>
<div class="line">  <span class="comment">/*</span></div>
<div class="line"><span class="comment">    Input data.</span></div>
<div class="line"><span class="comment">    It is corresponding to a point inside the first class.</span></div>
<div class="line"><span class="comment">   */</span></div>
<div class="line">  in[0] = 0.4f;</div>
<div class="line">  in[1] = 0.1f;</div>
<div class="line"></div>
<div class="line">  <a name="a9"></a><a class="code" href="group__polysvm.html#ga5719f32544ecc1b568aaba7f5d237df8">arm_svm_polynomial_predict_f32</a>(&amp;params, in, &amp;result);</div>
<div class="line"></div>
<div class="line">  <span class="comment">/* Result should be 0 : First class */</span></div>
<div class="line"><span class="preprocessor">#if defined(SEMIHOSTING)</span></div>
<div class="line"><span class="preprocessor"></span>  printf(<span class="stringliteral">&quot;Result = %d\n&quot;</span>, result);</div>
<div class="line"><span class="preprocessor">#endif</span></div>
<div class="line"><span class="preprocessor"></span></div>
<div class="line">  <span class="comment">/*</span></div>
<div class="line"><span class="comment">    This input vector is corresponding to a point inside the second class.</span></div>
<div class="line"><span class="comment">   */</span></div>
<div class="line">  in[0] = 3.0f;</div>
<div class="line">  in[1] = 0.0f;</div>
<div class="line"></div>
<div class="line">  <a class="code" href="group__polysvm.html#ga5719f32544ecc1b568aaba7f5d237df8">arm_svm_polynomial_predict_f32</a>(&amp;params, in, &amp;result);</div>
<div class="line">  </div>
<div class="line">  <span class="comment">/* Result should be 1 : Second class */</span></div>
<div class="line"><span class="preprocessor">#if defined(SEMIHOSTING)</span></div>
<div class="line"><span class="preprocessor"></span>  printf(<span class="stringliteral">&quot;Result = %d\n&quot;</span>, result);</div>
<div class="line"><span class="preprocessor">#endif</span></div>
<div class="line"><span class="preprocessor"></span></div>
<div class="line"><span class="preprocessor">#if !defined(SEMIHOSTING)</span></div>
<div class="line"><span class="preprocessor"></span>  <span class="keywordflow">while</span> (1); <span class="comment">/* main function does not return */</span></div>
<div class="line"><span class="preprocessor">#endif</span></div>
<div class="line"><span class="preprocessor"></span>}</div>
<div class="line"></div>
<div class="line"></div>
<div class="line"></div>
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